sdrangel/sdrbase/gui/glscope.cpp

#include <QPainter>
#include <QMouseEvent>
#include "gui/glscope.h"
#include "dsp/dspengine.h"

#include <algorithm>
#include <iostream>

#ifdef _WIN32
static double log2f(double n)
{
	return log(n) / log(2.0);
}
#endif

GLScope::GLScope(QWidget* parent) :
	QGLWidget(parent),
	m_dataChanged(false),
	m_configChanged(true),
	m_mode(ModeIQ),
	m_displays(DisplayBoth),
	m_orientation(Qt::Horizontal),
	m_displayTrace(&m_rawTrace),
	m_oldTraceSize(-1),
	m_sampleRate(0),
	m_amp1(1.0),
	m_amp2(1.0),
	m_ofs1(0.0),
	m_ofs2(0.0),
	m_dspEngine(NULL),
	m_scopeVis(NULL),
	m_amp(1.0),
	m_ofs(0.0),
	m_timeBase(1),
	m_timeOfsProMill(0),
	m_triggerChannel(ScopeVis::TriggerFreeRun),
	m_triggerLevel(0.0),
	m_displayGridIntensity(5),
	m_displayTraceIntensity(50),
	m_left1ScaleTextureAllocated(false),
	m_left2ScaleTextureAllocated(false),
	m_bot1ScaleTextureAllocated(false),
	m_bot2ScaleTextureAllocated(false)
{
	setAttribute(Qt::WA_OpaquePaintEvent);
	connect(&m_timer, SIGNAL(timeout()), this, SLOT(tick()));
	m_timer.start(50);
	m_y1Scale.setFont(font());
	m_y1Scale.setOrientation(Qt::Vertical);
	m_y2Scale.setFont(font());
	m_y2Scale.setOrientation(Qt::Vertical);
	m_x1Scale.setFont(font());
	m_x1Scale.setOrientation(Qt::Horizontal);
	m_x2Scale.setFont(font());
	m_x2Scale.setOrientation(Qt::Horizontal);
}

GLScope::~GLScope()
{
	if(m_dspEngine != NULL) {
		m_dspEngine->removeSink(m_scopeVis);
		delete m_scopeVis;
	}
}

void GLScope::setDSPEngine(DSPEngine* dspEngine)
{
	if((m_dspEngine == NULL) && (dspEngine != NULL)) {
		m_dspEngine = dspEngine;
		m_scopeVis = new ScopeVis(this);
		m_dspEngine->addSink(m_scopeVis);
	}
}

void GLScope::setSampleRate(int sampleRate) {
	m_sampleRate = sampleRate;
	m_configChanged = true;
	update();
	emit sampleRateChanged(m_sampleRate);
}

void GLScope::setAmp(Real amp)
{
	m_amp = amp;
	m_configChanged = true;
	update();
}

void GLScope::setAmpOfs(Real ampOfs)
{
	m_ofs = ampOfs;
	m_configChanged = true;
	update();
}

void GLScope::setTimeBase(int timeBase)
{
	m_timeBase = timeBase;
	m_configChanged = true;
	update();
}

void GLScope::setTimeOfsProMill(int timeOfsProMill)
{
	m_timeOfsProMill = timeOfsProMill;
	m_configChanged = true;
	update();
}

void GLScope::setMode(Mode mode)
{
	m_mode = mode;
	m_dataChanged = true;
	m_configChanged = true;
	update();
}

void GLScope::setDisplays(Displays displays)
{
	m_displays = displays;
	m_dataChanged = true;
	m_configChanged = true;
	update();
}

void GLScope::setOrientation(Qt::Orientation orientation)
{
	m_orientation = orientation;
	m_configChanged = true;
	update();
}

void GLScope::setDisplayGridIntensity(int intensity)
{
	m_displayGridIntensity = intensity;
	if (m_displayGridIntensity > 100) {
		m_displayGridIntensity = 100;
	} else if (m_displayGridIntensity < 0) {
		m_displayGridIntensity = 0;
	}
	update();
}

void GLScope::setDisplayTraceIntensity(int intensity)
{
	m_displayTraceIntensity = intensity;
	if (m_displayTraceIntensity > 100) {
		m_displayTraceIntensity = 100;
	} else if (m_displayTraceIntensity < 0) {
		m_displayTraceIntensity = 0;
	}
	update();
}

void GLScope::newTrace(const std::vector<Complex>& trace, int sampleRate)
{
	if(!m_mutex.tryLock(2))
		return;
	if(m_dataChanged) {
		m_mutex.unlock();
		return;
	}

	m_rawTrace = trace;

	m_sampleRate = sampleRate; // sampleRate comes from scopeVis
	m_dataChanged = true;

	m_mutex.unlock();
}

void GLScope::initializeGL()
{
	glDisable(GL_DEPTH_TEST);
}

void GLScope::resizeGL(int width, int height)
{
	glViewport(0, 0, width, height);
	m_configChanged = true;
}

void GLScope::paintGL()
{
	if(!m_mutex.tryLock(2))
		return;

	if(m_configChanged)
		applyConfig();

	handleMode();

	if(m_displayTrace->size() - m_oldTraceSize != 0) {
		m_oldTraceSize = m_displayTrace->size();
		emit traceSizeChanged(m_displayTrace->size());
	}

	glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
	glClear(GL_COLOR_BUFFER_BIT);

	glPushMatrix();
	glScalef(2.0, -2.0, 1.0);
	glTranslatef(-0.50, -0.5, 0);

	// I - primary display

	if ((m_displays == DisplayBoth) || (m_displays == DisplayFirstOnly))
	{
		// draw rect around
		glPushMatrix();
		glTranslatef(m_glScopeRect1.x(), m_glScopeRect1.y(), 0);
		glScalef(m_glScopeRect1.width(), m_glScopeRect1.height(), 1);
		glEnable(GL_BLEND);
		glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
		glLineWidth(1.0f);
		glColor4f(1, 1, 1, 0.5);
		glBegin(GL_LINE_LOOP);
		glVertex2f(1, 1);
		glVertex2f(0, 1);
		glVertex2f(0, 0);
		glVertex2f(1, 0);
		glEnd();
		glDisable(GL_BLEND);

		// paint grid
		const ScaleEngine::TickList* tickList;
		const ScaleEngine::Tick* tick;
		glEnable(GL_BLEND);
		glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
		glLineWidth(1.0f);
		glColor4f(1, 1, 1, m_displayGridIntensity / 100.0);
		// Horizontal Y1
		tickList = &m_y1Scale.getTickList();
		for(int i= 0; i < tickList->count(); i++) {
			tick = &(*tickList)[i];
			if(tick->major) {
				if(tick->textSize > 0) {
					float y = 1 - (tick->pos / m_y1Scale.getSize());
					glBegin(GL_LINE_LOOP);
					glVertex2f(0, y);
					glVertex2f(1, y);
					glEnd();
				}
			}
		}
		/*
		for(int i = 1; i < 10; i++) {
			glBegin(GL_LINE_LOOP);
			glVertex2f(0, i * 0.1);
			glVertex2f(1, i * 0.1);
			glEnd();
		}*/
		// Vertical X1
		tickList = &m_x1Scale.getTickList();
		for(int i= 0; i < tickList->count(); i++) {
			tick = &(*tickList)[i];
			if(tick->major) {
				if(tick->textSize > 0) {
					float x = tick->pos / m_x1Scale.getSize();
					glBegin(GL_LINE_LOOP);
					glVertex2f(x, 0);
					glVertex2f(x, 1);
					glEnd();
				}
			}
		}
		/*
		for(int i = 1; i < 10; i++) {
			glBegin(GL_LINE_LOOP);
			glVertex2f(i * 0.1, 0);
			glVertex2f(i * 0.1, 1);
			glEnd();
		}*/
		glPopMatrix();

		// paint left #1 scale
		glBindTexture(GL_TEXTURE_2D, m_left1ScaleTexture);
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
		glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
		glPushMatrix();
		glTranslatef(m_glLeft1ScaleRect.x(), m_glLeft1ScaleRect.y(), 0);
		glScalef(m_glLeft1ScaleRect.width(), m_glLeft1ScaleRect.height(), 1);
		glEnable(GL_TEXTURE_2D);
		glBegin(GL_QUADS);
		glTexCoord2f(0, 1);
		glVertex2f(0, 1);
		glTexCoord2f(1, 1);
		glVertex2f(1, 1);
		glTexCoord2f(1, 0);
		glVertex2f(1, 0);
		glTexCoord2f(0, 0);
		glVertex2f(0, 0);
		glEnd();
		glDisable(GL_TEXTURE_2D);
		glPopMatrix();

		// paint bottom #1 scale
		glBindTexture(GL_TEXTURE_2D, m_bot1ScaleTexture);
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
		glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
		glPushMatrix();
		glTranslatef(m_glBot1ScaleRect.x(), m_glBot1ScaleRect.y(), 0);
		glScalef(m_glBot1ScaleRect.width(), m_glBot1ScaleRect.height(), 1);
		glEnable(GL_TEXTURE_2D);
		glBegin(GL_QUADS);
		glTexCoord2f(0, 1);
		glVertex2f(0, 1);
		glTexCoord2f(1, 1);
		glVertex2f(1, 1);
		glTexCoord2f(1, 0);
		glVertex2f(1, 0);
		glTexCoord2f(0, 0);
		glVertex2f(0, 0);
		glEnd();
		glDisable(GL_TEXTURE_2D);
		glPopMatrix();

		// paint trigger level
		if(m_triggerChannel == ScopeVis::TriggerChannelI) {
			glPushMatrix();
			glTranslatef(m_glScopeRect1.x(), m_glScopeRect1.y() + m_glScopeRect1.height() / 2.0, 0);
			glScalef(m_glScopeRect1.width(), -(m_glScopeRect1.height() / 2) * m_amp1, 1);
			glEnable(GL_BLEND);
			glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
			glEnable(GL_LINE_SMOOTH);
			glLineWidth(1.0f);
			glColor4f(0, 1, 0, 0.3f);
			glBegin(GL_LINE_LOOP);
			glVertex2f(0, m_triggerLevel);
			glVertex2f(1, m_triggerLevel);
			glEnd();
			/*
			glColor4f(0, 0.8f, 0.0, 0.3f);
			glBegin(GL_LINE_LOOP);
			glVertex2f(0, m_triggerLevelLow);
			glVertex2f(1, m_triggerLevelLow);
			glEnd();*/
			glDisable(GL_LINE_SMOOTH);
			glPopMatrix();
		}

		// paint trace
		if(m_displayTrace->size() > 0) {
			glPushMatrix();
			glTranslatef(m_glScopeRect1.x(), m_glScopeRect1.y() + m_glScopeRect1.height() / 2.0, 0);
			glScalef(m_glScopeRect1.width() * (float)m_timeBase / (float)(m_displayTrace->size() - 1), -(m_glScopeRect1.height() / 2) * m_amp1, 1);
			glEnable(GL_BLEND);
			glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
			glEnable(GL_LINE_SMOOTH);
			glLineWidth(1.0f);
			glColor4f(1, 1, 0.25f, m_displayTraceIntensity / 100.0);
			int start = (m_timeOfsProMill/1000.0) * m_displayTrace->size();
			int end = std::min(start + m_displayTrace->size()/m_timeBase, m_displayTrace->size());
			if(end - start < 2)
				start--;
			float posLimit = 1.0 / m_amp1;
			float negLimit = -1.0 / m_amp1;
			glBegin(GL_LINE_STRIP);
			for(int i = start; i < end; i++) {
				float v = (*m_displayTrace)[i].real() + m_ofs1;
				if(v > posLimit)
					v = posLimit;
				else if(v < negLimit)
					v = negLimit;
				glVertex2f(i - start, v);
			}
			glEnd();
			glDisable(GL_LINE_SMOOTH);
			glPopMatrix();
		}
	} // Both displays or primary only

	// Q - secondary display

	if ((m_displays == DisplayBoth) || (m_displays == DisplaySecondOnly))
	{
		// draw rect around
		glPushMatrix();
		glTranslatef(m_glScopeRect2.x(), m_glScopeRect2.y(), 0);
		glScalef(m_glScopeRect2.width(), m_glScopeRect2.height(), 1);
		glEnable(GL_BLEND);
		glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
		glLineWidth(1.0f);
		glColor4f(1, 1, 1, 0.5);
		glBegin(GL_LINE_LOOP);
		glVertex2f(1, 1);
		glVertex2f(0, 1);
		glVertex2f(0, 0);
		glVertex2f(1, 0);
		glEnd();
		glDisable(GL_BLEND);

		// paint grid
		const ScaleEngine::TickList* tickList;
		const ScaleEngine::Tick* tick;
		glEnable(GL_BLEND);
		glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
		glLineWidth(1.0f);
		glColor4f(1, 1, 1, m_displayGridIntensity / 100.0);
		// Horizontal Y2
		tickList = &m_y2Scale.getTickList();
		for(int i= 0; i < tickList->count(); i++) {
			tick = &(*tickList)[i];
			if(tick->major) {
				if(tick->textSize > 0) {
					float y = 1 - (tick->pos / m_y2Scale.getSize());
					glBegin(GL_LINE_LOOP);
					glVertex2f(0, y);
					glVertex2f(1, y);
					glEnd();
				}
			}
		}
		/*
		for(int i = 1; i < 10; i++) {
			glBegin(GL_LINE_LOOP);
			glVertex2f(0, i * 0.1);
			glVertex2f(1, i * 0.1);
			glEnd();
		}*/
		// Vertical X2
		tickList = &m_x2Scale.getTickList();
		for(int i= 0; i < tickList->count(); i++) {
			tick = &(*tickList)[i];
			if(tick->major) {
				if(tick->textSize > 0) {
					float x = tick->pos / m_x2Scale.getSize();
					glBegin(GL_LINE_LOOP);
					glVertex2f(x, 0);
					glVertex2f(x, 1);
					glEnd();
				}
			}
		}
		/*
		for(int i = 1; i < 10; i++) {
			glBegin(GL_LINE_LOOP);
			glVertex2f(i * 0.1, 0);
			glVertex2f(i * 0.1, 1);
			glEnd();
		}*/
		glPopMatrix();

		// paint left #2 scale
		glBindTexture(GL_TEXTURE_2D, m_left2ScaleTexture);
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
		glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
		glPushMatrix();
		glTranslatef(m_glLeft2ScaleRect.x(), m_glLeft2ScaleRect.y(), 0);
		glScalef(m_glLeft2ScaleRect.width(), m_glLeft2ScaleRect.height(), 1);
		glEnable(GL_TEXTURE_2D);
		glBegin(GL_QUADS);
		glTexCoord2f(0, 1);
		glVertex2f(0, 1);
		glTexCoord2f(1, 1);
		glVertex2f(1, 1);
		glTexCoord2f(1, 0);
		glVertex2f(1, 0);
		glTexCoord2f(0, 0);
		glVertex2f(0, 0);
		glEnd();
		glDisable(GL_TEXTURE_2D);
		glPopMatrix();

		// paint bottom #2 scale
		glBindTexture(GL_TEXTURE_2D, m_bot2ScaleTexture);
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
		glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
		glPushMatrix();
		glTranslatef(m_glBot2ScaleRect.x(), m_glBot2ScaleRect.y(), 0);
		glScalef(m_glBot2ScaleRect.width(), m_glBot2ScaleRect.height(), 1);
		glEnable(GL_TEXTURE_2D);
		glBegin(GL_QUADS);
		glTexCoord2f(0, 1);
		glVertex2f(0, 1);
		glTexCoord2f(1, 1);
		glVertex2f(1, 1);
		glTexCoord2f(1, 0);
		glVertex2f(1, 0);
		glTexCoord2f(0, 0);
		glVertex2f(0, 0);
		glEnd();
		glDisable(GL_TEXTURE_2D);
		glPopMatrix();

		// paint trigger level
		if(m_triggerChannel == ScopeVis::TriggerPhase) {
			glPushMatrix();
			glTranslatef(m_glScopeRect2.x(), m_glScopeRect2.y() + m_glScopeRect2.height() / 2.0, 0);
			glScalef(m_glScopeRect2.width(), -(m_glScopeRect2.height() / 2) * m_amp2, 1);
			glEnable(GL_BLEND);
			glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
			glEnable(GL_LINE_SMOOTH);
			glLineWidth(1.0f);
			glColor4f(0, 1, 0, 0.3f);
			glBegin(GL_LINE_LOOP);
			glVertex2f(0, m_triggerLevel);
			glVertex2f(1, m_triggerLevel);
			glEnd();
			/*
			glColor4f(0, 0.8f, 0.0, 0.3f);
			glBegin(GL_LINE_LOOP);
			glVertex2f(0, m_triggerLevelLow);
			glVertex2f(1, m_triggerLevelLow);
			glEnd();*/
			glDisable(GL_LINE_SMOOTH);
			glPopMatrix();
		}

		// paint trace
		if(m_displayTrace->size() > 0) {
			glPushMatrix();
			glTranslatef(m_glScopeRect2.x(), m_glScopeRect2.y() + m_glScopeRect2.height() / 2.0, 0);
			glScalef(m_glScopeRect2.width() * (float)m_timeBase / (float)(m_displayTrace->size() - 1), -(m_glScopeRect2.height() / 2) * m_amp2, 1);
			glEnable(GL_BLEND);
			glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
			glEnable(GL_LINE_SMOOTH);
			glLineWidth(1.0f);
			glColor4f(1, 1, 0.25f, m_displayTraceIntensity / 100.0);
			int start = (m_timeOfsProMill/1000.0) * m_displayTrace->size();
			int end = std::min(start + m_displayTrace->size()/m_timeBase, m_displayTrace->size());
			if(end - start < 2)
				start--;
			float posLimit = 1.0 / m_amp2;
			float negLimit = -1.0 / m_amp2;
			glBegin(GL_LINE_STRIP);
			for(int i = start; i < end; i++) {
				float v = (*m_displayTrace)[i].imag();
				if(v > posLimit)
					v = posLimit;
				else if(v < negLimit)
					v = negLimit;
				glVertex2f(i - start, v);
			}
			glEnd();
			glDisable(GL_LINE_SMOOTH);
			glPopMatrix();
		}
	} // Both displays or secondary display only

	glPopMatrix();
	m_dataChanged = false;
	m_mutex.unlock();
}

void GLScope::mousePressEvent(QMouseEvent* event)
{
#if 0
	int x = event->x() - 10;
	int y = event->y() - 10;
	Real time;
	Real amplitude;
	ScopeVis::TriggerChannel channel;
	if((x < 0) || (x >= width() - 20))
		return;
	if((y < 0) || (y >= height() - 20))
		return;

	if((m_sampleRate != 0) && (m_timeBase != 0) && (width() > 20))
		time = ((Real)x * (Real)m_displayTrace->size()) / ((Real)m_sampleRate * (Real)m_timeBase * (Real)(width() - 20));
	else time = -1.0;

	if(y < (height() - 30) / 2) {
		channel = ScopeVis::TriggerChannelI;
		if((m_amp != 0) && (height() > 30))
			amplitude = 2.0 * ((height() - 30) * 0.25 - (Real)y) / (m_amp * (height() - 30) / 2.0);
		else amplitude = -1;
	} else if(y > (height() - 30) / 2 + 10) {
		y -= 10 + (height() - 30) / 2;
		channel = ScopeVis::TriggerChannelQ;
		if((m_amp != 0) && (height() > 30))
			amplitude = 2.0 * ((height() - 30) * 0.25 - (Real)y) / (m_amp * (height() - 30) / 2.0);
		else amplitude = -1;
	} else {
		channel = ScopeVis::TriggerFreeRun;
	}

	if(m_dspEngine != NULL) {
		qDebug("amp %f", amplitude);
		m_triggerLevel = amplitude + 0.01 / m_amp;
		m_triggerLevelLow = amplitude - 0.01 / m_amp;
		if(m_triggerLevel > 1.0)
			m_triggerLevel = 1.0;
		else if(m_triggerLevel < -1.0)
			m_triggerLevel = -1.0;
		if(m_triggerLevelLow > 1.0)
			m_triggerLevelLow = 1.0;
		else if(m_triggerLevelLow < -1.0)
			m_triggerLevelLow = -1.0;
		m_scopeVis->configure(m_dspEngine->getMessageQueue(), channel, m_triggerLevel, m_triggerLevelLow);
		m_triggerChannel = channel;
		m_changed = true;
		update();
	}
#endif
}

void GLScope::handleMode()
{
	switch(m_mode) {
		case ModeIQ: {
			m_mathTrace.resize(m_rawTrace.size());
			std::vector<Complex>::iterator dst = m_mathTrace.begin();
			m_displayTrace = &m_rawTrace;
			for(std::vector<Complex>::const_iterator src = m_rawTrace.begin(); src != m_rawTrace.end(); ++src) {
				*dst++ = Complex(src->real() - 2*m_ofs, src->imag() - m_ofs);
			}
			m_displayTrace = &m_mathTrace;
			m_amp1 = m_amp;
			m_amp2 = m_amp;
			m_ofs1 = m_ofs;
			m_ofs2 = m_ofs;
			break;
		}
		case ModeMagLinPha: {
			m_mathTrace.resize(m_rawTrace.size());
			std::vector<Complex>::iterator dst = m_mathTrace.begin();
			for(std::vector<Complex>::const_iterator src = m_rawTrace.begin(); src != m_rawTrace.end(); ++src)
				*dst++ = Complex(abs(*src) - m_ofs/2.0, arg(*src) / M_PI);
			m_displayTrace = &m_mathTrace;
			m_amp1 = m_amp;
			m_amp2 = 1.0;
			m_ofs1 = -1.0 / m_amp1;
			m_ofs2 = 0.0;
			break;
		}
		case ModeMagdBPha: {
			m_mathTrace.resize(m_rawTrace.size());
			std::vector<Complex>::iterator dst = m_mathTrace.begin();
			Real mult = (10.0f / log2f(10.0f));
			for(std::vector<Complex>::const_iterator src = m_rawTrace.begin(); src != m_rawTrace.end(); ++src) {
				Real v = src->real() * src->real() + src->imag() * src->imag();
				v = (100.0 - m_ofs*100.0 + (mult * log2f(v))) / 100.0; // TODO: first term is the offset
				*dst++ = Complex(v, arg(*src) / M_PI);
			}
			m_displayTrace = &m_mathTrace;
			m_amp1 = 2.0 * m_amp;
			m_amp2 = 1.0;
			m_ofs1 = -1.0 / m_amp1;
			m_ofs2 = 0.0;
			break;
		}
		case ModeDerived12: {
			if(m_rawTrace.size() > 3) {
				m_mathTrace.resize(m_rawTrace.size() - 3);
				std::vector<Complex>::iterator dst = m_mathTrace.begin();
				for(uint i = 3; i < m_rawTrace.size() ; i++) {
					*dst++ = Complex(
						abs(m_rawTrace[i] - m_rawTrace[i - 1]),
						abs(m_rawTrace[i] - m_rawTrace[i - 1]) - abs(m_rawTrace[i - 2] - m_rawTrace[i - 3]));
				}
				m_displayTrace = &m_mathTrace;
				m_amp1 = m_amp;
				m_amp2 = m_amp;
				m_ofs1 = -1.0 / m_amp1;
				m_ofs2 = 0.0;
			}
			break;
		}
		case ModeCyclostationary: {
			if(m_rawTrace.size() > 2) {
				m_mathTrace.resize(m_rawTrace.size() - 2);
				std::vector<Complex>::iterator dst = m_mathTrace.begin();
				for(uint i = 2; i < m_rawTrace.size() ; i++)
					*dst++ = Complex(abs(m_rawTrace[i] - conj(m_rawTrace[i - 1])), 0);
				m_displayTrace = &m_mathTrace;
				m_amp1 = m_amp;
				m_amp2 = m_amp;
				m_ofs1 = -1.0 / m_amp1;
				m_ofs2 = 0.0;
			}
			break;
		}
	}
}

void GLScope::applyConfig()
{
	m_configChanged = false;

	QFontMetrics fm(font());
	int M = fm.width("-");

	int topMargin = 5;
	int botMargin = 20;
	int leftMargin = 35;
	int rightMargin = 5;

    float pow_floor = -100.0 + m_ofs * 100.0;
    float pow_range = 100.0 / m_amp;
    float amp_range = 2.0 / m_amp;
    float amp_ofs = m_ofs;
    float t_start = (m_timeOfsProMill / 1000.0) * ((float) m_displayTrace->size() / m_sampleRate);
    float t_len = ((float) m_displayTrace->size() / m_sampleRate) / (float) m_timeBase;

    m_x1Scale.setRange(Unit::Time, t_start, t_start + t_len);
    m_x2Scale.setRange(Unit::Time, t_start, t_start + t_len);

	switch(m_mode) {
		case ModeIQ: {
			if (amp_range < 2.0) {
				m_y1Scale.setRange(Unit::None, - amp_range * 500.0 + amp_ofs * 1000.0, amp_range * 500.0 + amp_ofs * 1000.0);
				m_y2Scale.setRange(Unit::None, - amp_range * 500.0 + amp_ofs * 1000.0, amp_range * 500.0 + amp_ofs * 1000.0);
			} else {
				m_y1Scale.setRange(Unit::None, - amp_range * 0.5 + amp_ofs, amp_range * 0.5 + amp_ofs);
				m_y2Scale.setRange(Unit::None, - amp_range * 0.5 + amp_ofs, amp_range * 0.5 + amp_ofs);
			}
			break;
		}
		case ModeMagLinPha: {
			if (amp_range < 2.0) {
				m_y1Scale.setRange(Unit::None, amp_ofs * 500.0, amp_range * 1000.0 + amp_ofs * 500.0);
			} else {
				m_y1Scale.setRange(Unit::None, amp_ofs/2.0, amp_range + amp_ofs/2.0);
			}
			m_y2Scale.setRange(Unit::None, -1.0, 1.0); // Scale to Pi
			break;
		}
		case ModeMagdBPha: {
			m_y1Scale.setRange(Unit::Decibel, pow_floor, pow_floor + pow_range);
			m_y2Scale.setRange(Unit::AngleDegrees, -1.0, 1.0); // Scale to Pi
			break;
		}
		case ModeDerived12: {
			if (amp_range < 2.0) {
				m_y1Scale.setRange(Unit::None, 0.0, amp_range * 1000.0);
				m_y2Scale.setRange(Unit::None, - amp_range * 500.0, amp_range * 500.0);
			} else {
				m_y1Scale.setRange(Unit::None, 0.0, amp_range);
				m_y2Scale.setRange(Unit::None, - amp_range * 0.5, amp_range * 0.5);
			}
			break;
		}
		case ModeCyclostationary: {
			if (amp_range < 2.0) {
				m_y1Scale.setRange(Unit::None, 0.0, amp_range * 1000.0);
				m_y2Scale.setRange(Unit::None, - amp_range * 500.0, amp_range * 500.0);
			} else {
				m_y1Scale.setRange(Unit::None, 0.0, amp_range);
				m_y2Scale.setRange(Unit::None, - amp_range * 0.5, amp_range * 0.5);
			}
			break;
		}
	}

    // QRectF(x, y, w, h); (x, y) = top left corner

	if (m_displays == DisplayBoth)
	{
		if(m_orientation == Qt::Vertical) {
			int scopeHeight = (height() - topMargin) / 2 - botMargin;
			int scopeWidth = width() - leftMargin - rightMargin;

			m_glScopeRect1 = QRectF(
				(float) leftMargin / (float) width(),
				(float) topMargin / (float) height(),
				(float) scopeWidth / (float) width(),
				(float) scopeHeight / (float) height()
			);
			m_glLeft1ScaleRect = QRectF(
				0,
				(float) topMargin / (float) height(),
				(float) (leftMargin-1) / (float) width(),
				(float) scopeHeight / (float) height()
			);
			m_glBot1ScaleRect = QRectF(
				(float) leftMargin / (float) width(),
				(float) (scopeHeight + topMargin + 1) / (float) height(),
				(float) scopeWidth / (float) width(),
				(float) (botMargin - 1) / (float) height()
			);

			{ // Y1 scale
				m_y1Scale.setSize(scopeHeight);

				m_left1ScalePixmap = QPixmap(
					leftMargin - 1,
					scopeHeight
				);

				const ScaleEngine::TickList* tickList;
				const ScaleEngine::Tick* tick;

				m_left1ScalePixmap.fill(Qt::black);
				QPainter painter(&m_left1ScalePixmap);
				painter.setPen(QColor(0xf0, 0xf0, 0xff));
				painter.setFont(font());
				tickList = &m_y1Scale.getTickList();

				for(int i = 0; i < tickList->count(); i++) {
					tick = &(*tickList)[i];
					if(tick->major) {
						if(tick->textSize > 0) {
							//std::cerr << (tick->text).toStdString() << " @ " << tick->textPos << std::endl;
							painter.drawText(QPointF(leftMargin - M - tick->textSize, topMargin + scopeHeight - tick->textPos - fm.ascent()/2), tick->text);
						}
					}
				}

				if (m_left1ScaleTextureAllocated)
					deleteTexture(m_left1ScaleTexture);
				m_left1ScaleTexture = bindTexture(m_left1ScalePixmap,
					GL_TEXTURE_2D,
					GL_RGBA,
					QGLContext::LinearFilteringBindOption |
					QGLContext::MipmapBindOption);
				m_left1ScaleTextureAllocated = true;
			} // Y1 scale
			{ // X1 scale
				m_x1Scale.setSize(scopeWidth);

				m_bot1ScalePixmap = QPixmap(
					scopeWidth,
					botMargin - 1
				);

				const ScaleEngine::TickList* tickList;
				const ScaleEngine::Tick* tick;

				m_bot1ScalePixmap.fill(Qt::black);
				QPainter painter(&m_bot1ScalePixmap);
				painter.setPen(QColor(0xf0, 0xf0, 0xff));
				painter.setFont(font());
				tickList = &m_x1Scale.getTickList();

				for(int i = 0; i < tickList->count(); i++) {
					tick = &(*tickList)[i];
					if(tick->major) {
						if(tick->textSize > 0) {
							painter.drawText(QPointF(tick->textPos, fm.height() - 1), tick->text);
						}
					}
				}

				if (m_bot1ScaleTextureAllocated)
					deleteTexture(m_bot1ScaleTexture);
				m_bot1ScaleTexture = bindTexture(m_bot1ScalePixmap,
					GL_TEXTURE_2D,
					GL_RGBA,
					QGLContext::LinearFilteringBindOption |
					QGLContext::MipmapBindOption);
				m_bot1ScaleTextureAllocated = true;
			} // X1 scale

			m_glScopeRect2 = QRectF(
				(float) leftMargin / (float)width(),
				(float) (botMargin + topMargin + scopeHeight) / (float)height(),
				(float) scopeWidth / (float)width(),
				(float) scopeHeight / (float)height()
			);
			m_glLeft2ScaleRect = QRectF(
				0,
				(float) (topMargin + scopeHeight + botMargin) / (float) height(),
				(float) (leftMargin-1) / (float) width(),
				(float) scopeHeight / (float) height()
			);
			m_glBot2ScaleRect = QRectF(
				(float) leftMargin / (float) width(),
				(float) (scopeHeight + topMargin + scopeHeight + botMargin + 1) / (float) height(),
				(float) scopeWidth / (float) width(),
				(float) (botMargin - 1) / (float) height()
			);
			{ // Y2 scale
				m_y2Scale.setSize(scopeHeight);

				m_left2ScalePixmap = QPixmap(
					leftMargin - 1,
					scopeHeight
				);

				const ScaleEngine::TickList* tickList;
				const ScaleEngine::Tick* tick;

				m_left2ScalePixmap.fill(Qt::black);
				QPainter painter(&m_left2ScalePixmap);
				painter.setPen(QColor(0xf0, 0xf0, 0xff));
				painter.setFont(font());
				tickList = &m_y2Scale.getTickList();

				for(int i = 0; i < tickList->count(); i++) {
					tick = &(*tickList)[i];
					if(tick->major) {
						if(tick->textSize > 0) {
							//std::cerr << (tick->text).toStdString() << " @ " << tick->textPos << std::endl;
							painter.drawText(QPointF(leftMargin - M - tick->textSize, topMargin + scopeHeight - tick->textPos - fm.ascent()/2), tick->text);
						}
					}
				}

				if (m_left2ScaleTextureAllocated)
					deleteTexture(m_left2ScaleTexture);
				m_left2ScaleTexture = bindTexture(m_left2ScalePixmap,
					GL_TEXTURE_2D,
					GL_RGBA,
					QGLContext::LinearFilteringBindOption |
					QGLContext::MipmapBindOption);
				m_left2ScaleTextureAllocated = true;
			} // Y2 scale
			{ // X2 scale
				m_x2Scale.setSize(scopeWidth);

				m_bot2ScalePixmap = QPixmap(
					scopeWidth,
					botMargin - 1
				);

				const ScaleEngine::TickList* tickList;
				const ScaleEngine::Tick* tick;

				m_bot2ScalePixmap.fill(Qt::black);
				QPainter painter(&m_bot2ScalePixmap);
				painter.setPen(QColor(0xf0, 0xf0, 0xff));
				painter.setFont(font());
				tickList = &m_x2Scale.getTickList();

				for(int i = 0; i < tickList->count(); i++) {
					tick = &(*tickList)[i];
					if(tick->major) {
						if(tick->textSize > 0) {
							painter.drawText(QPointF(tick->textPos, fm.height() - 1), tick->text);
						}
					}
				}

				if (m_bot2ScaleTextureAllocated)
					deleteTexture(m_bot2ScaleTexture);
				m_bot2ScaleTexture = bindTexture(m_bot2ScalePixmap,
					GL_TEXTURE_2D,
					GL_RGBA,
					QGLContext::LinearFilteringBindOption |
					QGLContext::MipmapBindOption);
				m_bot2ScaleTextureAllocated = true;
			} // X2 scale

		}
		else // Horizontal
		{
			int scopeHeight = height() - topMargin - botMargin;
			int scopeWidth = (width() - rightMargin)/2 - leftMargin;

			m_glScopeRect1 = QRectF(
				(float) leftMargin / (float) width(),
				(float) topMargin / (float) height(),
				(float) scopeWidth / (float) width(),
				(float) scopeHeight / (float) height()
			);
			m_glLeft1ScaleRect = QRectF(
				0,
				(float) topMargin / (float) height(),
				(float) (leftMargin-1) / (float) width(),
				(float) scopeHeight / (float) height()
			);
			m_glBot1ScaleRect = QRectF(
				(float) leftMargin / (float) width(),
				(float) (scopeHeight + topMargin + 1) / (float) height(),
				(float) scopeWidth / (float) width(),
				(float) (botMargin - 1) / (float) height()
			);

			{ // Y1 scale
				//std::cerr << "Horizontal: " << width() << "x" << scopeHeight << " amp:" << m_amp << std::endl;
				m_y1Scale.setSize(scopeHeight);

				m_left1ScalePixmap = QPixmap(
					leftMargin - 1,
					scopeHeight
				);

				const ScaleEngine::TickList* tickList;
				const ScaleEngine::Tick* tick;

				m_left1ScalePixmap.fill(Qt::black);
				QPainter painter(&m_left1ScalePixmap);
				painter.setPen(QColor(0xf0, 0xf0, 0xff));
				painter.setFont(font());
				tickList = &m_y1Scale.getTickList();

				for(int i = 0; i < tickList->count(); i++) {
					tick = &(*tickList)[i];
					if(tick->major) {
						if(tick->textSize > 0) {
							//std::cerr << (tick->text).toStdString() << " @ " << tick->textPos << std::endl;
							painter.drawText(QPointF(leftMargin - M - tick->textSize, topMargin + scopeHeight - tick->textPos - fm.ascent()/2), tick->text);
						}
					}
				}

				if (m_left1ScaleTextureAllocated)
					deleteTexture(m_left1ScaleTextureAllocated);
				m_left1ScaleTexture = bindTexture(m_left1ScalePixmap,
					GL_TEXTURE_2D,
					GL_RGBA,
					QGLContext::LinearFilteringBindOption |
					QGLContext::MipmapBindOption);
				m_left1ScaleTextureAllocated = true;
			} // Y1 scale
			{ // X1 scale
				m_x1Scale.setSize(scopeWidth);

				m_bot1ScalePixmap = QPixmap(
					scopeWidth,
					botMargin - 1
				);

				const ScaleEngine::TickList* tickList;
				const ScaleEngine::Tick* tick;

				m_bot1ScalePixmap.fill(Qt::black);
				QPainter painter(&m_bot1ScalePixmap);
				painter.setPen(QColor(0xf0, 0xf0, 0xff));
				painter.setFont(font());
				tickList = &m_x1Scale.getTickList();

				for(int i = 0; i < tickList->count(); i++) {
					tick = &(*tickList)[i];
					if(tick->major) {
						if(tick->textSize > 0) {
							painter.drawText(QPointF(tick->textPos, fm.height() - 1), tick->text);
						}
					}
				}

				if (m_bot1ScaleTextureAllocated)
					deleteTexture(m_bot1ScaleTexture);
				m_bot1ScaleTexture = bindTexture(m_bot1ScalePixmap,
					GL_TEXTURE_2D,
					GL_RGBA,
					QGLContext::LinearFilteringBindOption |
					QGLContext::MipmapBindOption);
				m_bot1ScaleTextureAllocated = true;
			} // X1 scale

			m_glScopeRect2 = QRectF(
				(float)(leftMargin + leftMargin + ((width() - leftMargin - leftMargin - rightMargin) / 2)) / (float)width(),
				(float)topMargin / (float)height(),
				(float)((width() - leftMargin - leftMargin - rightMargin) / 2) / (float)width(),
				(float)(height() - topMargin - botMargin) / (float)height()
			);
			m_glLeft2ScaleRect = QRectF(
				(float) (leftMargin + scopeWidth) / (float) width(),
				(float) topMargin / (float) height(),
				(float) (leftMargin-1) / (float) width(),
				(float) scopeHeight / (float) height()
			);
			m_glBot2ScaleRect = QRectF(
				(float) (leftMargin + leftMargin + scopeWidth) / (float) width(),
				(float) (scopeHeight + topMargin + 1) / (float) height(),
				(float) scopeWidth / (float) width(),
				(float) (botMargin - 1) / (float) height()
			);

			{ // Y2 scale
				m_y2Scale.setSize(scopeHeight);

				m_left2ScalePixmap = QPixmap(
					leftMargin - 1,
					scopeHeight
				);

				const ScaleEngine::TickList* tickList;
				const ScaleEngine::Tick* tick;

				m_left2ScalePixmap.fill(Qt::black);
				QPainter painter(&m_left2ScalePixmap);
				painter.setPen(QColor(0xf0, 0xf0, 0xff));
				painter.setFont(font());
				tickList = &m_y2Scale.getTickList();

				for(int i = 0; i < tickList->count(); i++) {
					tick = &(*tickList)[i];
					if(tick->major) {
						if(tick->textSize > 0) {
							//std::cerr << (tick->text).toStdString() << " @ " << tick->textPos << std::endl;
							painter.drawText(QPointF(leftMargin - M - tick->textSize, topMargin + scopeHeight - tick->textPos - fm.ascent()/2), tick->text);
						}
					}
				}

				if (m_left2ScaleTextureAllocated)
					deleteTexture(m_left2ScaleTexture);
				m_left2ScaleTexture = bindTexture(m_left2ScalePixmap,
					GL_TEXTURE_2D,
					GL_RGBA,
					QGLContext::LinearFilteringBindOption |
					QGLContext::MipmapBindOption);
				m_left2ScaleTextureAllocated = true;
			} // Y2 scale
			{ // X2 scale
				m_x2Scale.setSize(scopeWidth);

				m_bot2ScalePixmap = QPixmap(
					scopeWidth,
					botMargin - 1
				);

				const ScaleEngine::TickList* tickList;
				const ScaleEngine::Tick* tick;

				m_bot2ScalePixmap.fill(Qt::black);
				QPainter painter(&m_bot2ScalePixmap);
				painter.setPen(QColor(0xf0, 0xf0, 0xff));
				painter.setFont(font());
				tickList = &m_x2Scale.getTickList();

				for(int i = 0; i < tickList->count(); i++) {
					tick = &(*tickList)[i];
					if(tick->major) {
						if(tick->textSize > 0) {
							painter.drawText(QPointF(tick->textPos, fm.height() - 1), tick->text);
						}
					}
				}

				if (m_bot2ScaleTextureAllocated)
					deleteTexture(m_bot2ScaleTexture);
				m_bot2ScaleTexture = bindTexture(m_bot2ScalePixmap,
					GL_TEXTURE_2D,
					GL_RGBA,
					QGLContext::LinearFilteringBindOption |
					QGLContext::MipmapBindOption);
				m_bot2ScaleTextureAllocated = true;
			} // X2 scale
		}
	} // Both displays
	else if (m_displays == DisplayFirstOnly)
	{
		int scopeHeight = height() - topMargin - botMargin;
		int scopeWidth = width() - leftMargin - rightMargin;

		m_glScopeRect1 = QRectF(
			(float) leftMargin / (float) width(),
			(float) topMargin / (float) height(),
			(float) scopeWidth / (float) width(),
			(float) scopeHeight / (float) height()
		);
		m_glLeft1ScaleRect = QRectF(
			0,
			(float) topMargin / (float) height(),
			(float) (leftMargin-1) / (float) width(),
			(float) scopeHeight / (float) height()
		);
		m_glBot1ScaleRect = QRectF(
			(float) leftMargin / (float) width(),
			(float) (scopeHeight + topMargin + 1) / (float) height(),
			(float) scopeWidth / (float) width(),
			(float) (botMargin - 1) / (float) height()
		);

		{ // Y1 scale
			//std::cerr << "Horizontal: " << width() << "x" << scopeHeight << " amp:" << m_amp << std::endl;
			m_y1Scale.setSize(scopeHeight);

			m_left1ScalePixmap = QPixmap(
				leftMargin - 1,
				scopeHeight
			);

			const ScaleEngine::TickList* tickList;
			const ScaleEngine::Tick* tick;

			m_left1ScalePixmap.fill(Qt::black);
			QPainter painter(&m_left1ScalePixmap);
			painter.setPen(QColor(0xf0, 0xf0, 0xff));
			painter.setFont(font());
			tickList = &m_y1Scale.getTickList();

			for(int i = 0; i < tickList->count(); i++) {
				tick = &(*tickList)[i];
				if(tick->major) {
					if(tick->textSize > 0) {
						//std::cerr << (tick->text).toStdString() << " @ " << tick->textPos << std::endl;
						painter.drawText(QPointF(leftMargin - M - tick->textSize, topMargin + scopeHeight - tick->textPos - fm.ascent()/2), tick->text);
					}
				}
			}

			if (m_left1ScaleTextureAllocated)
				deleteTexture(m_left1ScaleTextureAllocated);
			m_left1ScaleTexture = bindTexture(m_left1ScalePixmap,
				GL_TEXTURE_2D,
				GL_RGBA,
				QGLContext::LinearFilteringBindOption |
				QGLContext::MipmapBindOption);
			m_left1ScaleTextureAllocated = true;
		} // Y1 scale
		{ // X1 scale
			m_x1Scale.setSize(scopeWidth);

			m_bot1ScalePixmap = QPixmap(
				scopeWidth,
				botMargin - 1
			);

			const ScaleEngine::TickList* tickList;
			const ScaleEngine::Tick* tick;

			m_bot1ScalePixmap.fill(Qt::black);
			QPainter painter(&m_bot1ScalePixmap);
			painter.setPen(QColor(0xf0, 0xf0, 0xff));
			painter.setFont(font());
			tickList = &m_x1Scale.getTickList();

			for(int i = 0; i < tickList->count(); i++) {
				tick = &(*tickList)[i];
				if(tick->major) {
					if(tick->textSize > 0) {
						painter.drawText(QPointF(tick->textPos, fm.height() - 1), tick->text);
					}
				}
			}

			if (m_bot1ScaleTextureAllocated)
				deleteTexture(m_bot1ScaleTexture);
			m_bot1ScaleTexture = bindTexture(m_bot1ScalePixmap,
				GL_TEXTURE_2D,
				GL_RGBA,
				QGLContext::LinearFilteringBindOption |
				QGLContext::MipmapBindOption);
			m_bot1ScaleTextureAllocated = true;
		} // X1 scale
	} // Primary display only
	else if (m_displays == DisplaySecondOnly)
	{
		int scopeHeight = height() - topMargin - botMargin;
		int scopeWidth = width() - leftMargin - rightMargin;

		m_glScopeRect2 = QRectF(
			(float) leftMargin / (float) width(),
			(float) topMargin / (float) height(),
			(float) scopeWidth / (float) width(),
			(float) scopeHeight / (float) height()
		);
		m_glLeft2ScaleRect = QRectF(
			0,
			(float) topMargin / (float) height(),
			(float) (leftMargin-1) / (float) width(),
			(float) scopeHeight / (float) height()
		);
		m_glBot2ScaleRect = QRectF(
			(float) leftMargin / (float) width(),
			(float) (scopeHeight + topMargin + 1) / (float) height(),
			(float) scopeWidth / (float) width(),
			(float) (botMargin - 1) / (float) height()
		);

		{ // Y2 scale
			//std::cerr << "Horizontal: " << width() << "x" << scopeHeight << " amp:" << m_amp << std::endl;
			m_y2Scale.setSize(scopeHeight);

			m_left2ScalePixmap = QPixmap(
				leftMargin - 1,
				scopeHeight
			);

			const ScaleEngine::TickList* tickList;
			const ScaleEngine::Tick* tick;

			m_left2ScalePixmap.fill(Qt::black);
			QPainter painter(&m_left2ScalePixmap);
			painter.setPen(QColor(0xf0, 0xf0, 0xff));
			painter.setFont(font());
			tickList = &m_y2Scale.getTickList();

			for(int i = 0; i < tickList->count(); i++) {
				tick = &(*tickList)[i];
				if(tick->major) {
					if(tick->textSize > 0) {
						//std::cerr << (tick->text).toStdString() << " @ " << tick->textPos << std::endl;
						painter.drawText(QPointF(leftMargin - M - tick->textSize, topMargin + scopeHeight - tick->textPos - fm.ascent()/2), tick->text);
					}
				}
			}

			if (m_left2ScaleTextureAllocated)
				deleteTexture(m_left2ScaleTextureAllocated);
			m_left2ScaleTexture = bindTexture(m_left2ScalePixmap,
				GL_TEXTURE_2D,
				GL_RGBA,
				QGLContext::LinearFilteringBindOption |
				QGLContext::MipmapBindOption);
			m_left2ScaleTextureAllocated = true;
		} // Y2 scale
		{ // X2 scale
			m_x2Scale.setSize(scopeWidth);

			m_bot2ScalePixmap = QPixmap(
				scopeWidth,
				botMargin - 1
			);

			const ScaleEngine::TickList* tickList;
			const ScaleEngine::Tick* tick;

			m_bot2ScalePixmap.fill(Qt::black);
			QPainter painter(&m_bot2ScalePixmap);
			painter.setPen(QColor(0xf0, 0xf0, 0xff));
			painter.setFont(font());
			tickList = &m_x2Scale.getTickList();

			for(int i = 0; i < tickList->count(); i++) {
				tick = &(*tickList)[i];
				if(tick->major) {
					if(tick->textSize > 0) {
						painter.drawText(QPointF(tick->textPos, fm.height() - 1), tick->text);
					}
				}
			}

			if (m_bot2ScaleTextureAllocated)
				deleteTexture(m_bot2ScaleTexture);
			m_bot2ScaleTexture = bindTexture(m_bot2ScalePixmap,
				GL_TEXTURE_2D,
				GL_RGBA,
				QGLContext::LinearFilteringBindOption |
				QGLContext::MipmapBindOption);
			m_bot2ScaleTextureAllocated = true;
		} // X2 scale
	} // Secondary display only
}

void GLScope::tick()
{
	if(m_dataChanged)
		update();
}

void GLScope::setTriggerChannel(ScopeVis::TriggerChannel triggerChannel)
{
	m_triggerChannel = triggerChannel;
}

void GLScope::setTriggerLevel(Real triggerLevel)
{
	m_triggerLevel = triggerLevel;
}